Here is a fun article by Katherine Morris and Kathleen Dalton-Woodbury:

“Is It Something in the Water?” Why Mormons Write Science Fiction and Fantasy.

“ … book publishers these days have a tendency to look at the proliferation of authors in Utah and wonder, “What the heck is in the water here?” They’re not the only ones who have taken notice. From book publishers to bloggers to scholars of Mormon culture, a number of people have noted the success of Mormon authors, particularly in the genre of science fiction and fantasy, and have speculated as to why Mormons seem to be unusually well-represented in this field.”